Doorlock



Jufly 4, 1933. J. HILLGREN ET AL 1,916,266

DOORLOCK Filed June 16, 1930 WW5: 6209.4 flial/ef/y I N V ENT ORSBYQQQUM/M/M/ A TTORNEY.

Patented July 4, 1933 UNITED STATES Parana"- or rica v JAMES I-IILLGBENAim CARL HILLGREN, or SAN nrnso, CALIFORNIA, ASSIGNORS TO J..c.MANUFACTURING 00., A conrona'rron DOORLOGK Application filed June 16,

Our invention relates to door locks, and the objects of our inventionare: First, to provide a door lock in which a brace and bit or theequivalent is all that is necessary to prepare a door for receiving saiddoor lock, all need of large cut out portions in the door for receivingclumsy lock ca es, or the like, being unnecessary;

becond, to provide a door lock in which the locking means is containedwithin the door knob spindle, and in which the operatingportions of saidlocking means are centered in the door knob;

Third, to provide a door lock which is particularly compact, all partsexcepting the door knobs being within the margins of either one of twointersecting circular cylinders; v 7

Fourth, to provide a door lock which is extremely easy to install;

Fifth, to provide a door lock which is particularly economical ofconstruction, being composed of a minimum number of parts, and thesebeing simply made; and

Sixth, to provide on a whole a novelly constructed door lock which isdurable, sturdy, eflicient in its action, and which will not readilydeteriorate or get out of order.

With these and other objects in view as will appear hereinafter, ourinvention consists of certain novel features of construction,combination and arrangement of parts and portions as will be hereinafterdescribed in detail and particularly set forth in the appended claims,reference being had to the accompanying drawing and to the characters ofreference thereon, which form a part of this application, in which:

Figure 1 is a fragmentary sectional View $59 in plan of a door and ourdoor lock shown in connection therewith, with parts and portions inelevation to facilitate the illustration; Fig. 2 is an end elevationalview of one of the door knobs with parts and portions in section; Fig. 3is an end elevational view of the locking bolt and its casing, andadjacent portions of the door shown fragmentarily; Fig. 4 is atransverse sectional view through 14: of Fig. 1; Fig. 5 is a sectionalview through 55 of Fig.1, with the door omit- 1930. Serial 1*?0.461,452.

ted and with parts and portions in elevation; F 1g. 6 is a fragmentaryview similar to Fig. 5, showing the locking means in position forlocking the bolt; and Fig. 7 is another similar fragmentary sectionalview showing the bolt in its retracted positions; and Fig. 8 is asectional view through 88 of Fig. 1, with parts and portions inelevation to facilitate the illustration.

Similar characters of reference refer to similar parts and portionsthroughout the several views of the drawing.

Bolt casing 1, latch bolt 2, knob spindle 3, spring support 4, spring 5,stop 6, set screws 7, knobs 8 and 9, locking rods 10, escutcheons 11,and key plate 12 constitute the principal parts and portions of ournovel door lock.

The bolt casing 1 is in the form of an openended circular cylinder,which is adapted to fit into a recess bored into the edge of a door. Theouter end of the casing 1 is provided with an external flange 1a, whichfits against the edge margin of the door, as shown in Figs. 1, 3, and 5.

Slidably mounted in the bolt casing 1 is a latch bolt 2. The latch bolt2 comprises a head portion 2a of circular cross section, which isadapted to fit snugly within the casing 1 and protrude therefrom. Theprotruding portion of the head 2a is provided with a beveled side 26.The opposite exposed side of the head 2a is notched back so as to form aflat axially extending surface 20, adapted to lock in a conventionalkeeper mounted on the door jamb, not shown.

Extending rearwardly from the head 264 at the upper and lower marginsthereof and contiguous to the walls of the casing 1 are a pair'of arms2d, which are integral with the head 2a, and are joined together attheir extended ends by a cross portion 26.

Near the extended ends of the arms 2d, the opposite side walls of thecasing l are provided with alined openings 1?). Extending at rightangles to the casing 1 through these openings 1?), is a knob spindle 3,which is also in the form of a hollow annular cylinder, but of lessdiameter than the casing 1. The walls of the spindle 8 are considerablythicker than the walls of the casing 1. The

knob spindle 3 has a diameter small enough to fit between the arms 2d ofthe bolt 2.

The spindle 3 is provided with a notched portion 3a, leading aneccentrically located arcuat-e crank portion 3?). The arms 2d, a slightdistance forwardly of the cross portion 20, are provided with inwardlyextending projections 2f forming shoulders which are adapted to beengaged by the marginal portions of the crank 36, as shown best in Figs.5, 6, and 7.

A slight distance forwardly of the crank portion 3?), the casing 1supports a transversely extending spring support 4 in the .form of apolygonal shaped bar, which is secured at its ends to the walls of thecasing,

as shown best in Figs. 1 and 5.

A spring 5 extends between the support 4 and the head 2a of the latchbolt. This spring tends to force the latch bolt to its extended orforward position and bring the shoulders 2f into yieldable contact withthe margins of the crank 35.

The head 2a of the latch bolt is provided with a centrally locatedaxially extending opening 29 therethrough, which is adapted to receive astop pin 6. The stop pin 6 is pro vided with a head portion 6a, which isexternally threaded so as to fit into an internally threaded portion ofthe opening 29. The stop pin 6 extends rearwardly from the head 2a ofthe latch bolt, and is arranged so that its rearward or extended endengages the support when the latch bolt has moved inwardly apredetermined distance.

lVhen the spindle 3 is turned in either direction, the web '35 engagesone or the other of the shoulders 2f so as to draw the lock boltinwardly or rearwardly against the action of the spring 5. This movementis shown by dotted lines in Fig. 7. The stop pin 6 is adjusted so thatthe bolt cannot normally move inwardly to the solid line position shownin Fig. 7. However, in installing or removing the door lock, the stoppin 6 is shifted so as to allow the bolt to move into the solid lineposition shown in Fig. 7, whereupon the knob spindle 3 may be withdrawnfrom the door.

The knob spindle 3 extends transversely through the door and protrudesfrom the sides thereof. Secured to the protruding ends of the spindle 3,by set screws 7, are door knobs 8 and 9, which are provided withsubstantially semi-spherical depressions 8a and 9a, in their outer facesintersected by the bore through the shank portions 86 and 95,respectively, of the two knobs.

Rotatably mounted within the hollow knob spindle 3, is a locking rod 10.Opposite the notched portion 3a, of the spindle 3, the locking rod 10iscut away except for an eccentrieally located web portion 10a.

Cut into the cross portion 26, from the forward side thereof, is anarcuate slot 272., its

center of curvature substantially coinciding with the axis of thespindle 2, as shown best in Figs. 5, 6, and 7. The slot 2k is widened asit approaches the forward margin of the cross portion 25, so as toprovide space for the web 10a. The web 101! isadapt-ed to rotate in apath conforming to the slots 2h. h n the web 100. is in the positionshown in Fig. 5, the latchbolt is free to move within its casing. lVhenthe locking rod 10 is rotated so that the web 10a is in the positionshown in Fig. 6, the latch bolt is locked against movement.

The one end of the locking rod 10 is provided with a handle portion 106,which extends into the recess portion 9aof the knob 9. The handleportion 10b is arranged to be engaged by the thumb and forefinger of thehand.

In order to definitely limit its movement,

the locking rod 10 is provided with an arcuate channel 100 thereinopposite one of the pins 7 which receives said pin. This is shown inFigs. 1 and 2.

To prevent the locking rod 10 from turning too easily, the walls of thespindle 3 within the shank 9b of the handle 9 are provided with slits100, and bifurcated portions thus formed are pressed together so as toyieldably engage the locking rod.

The end of locking rod 10 opposite from the handle 10b is provided witha suitably formed notch 10d adapted to receive'a key inserted in the endof the spindle 3 having the knob 8. This end of the spindle 3 may beprovided with asuitable cap 12, having a slot 1264 cut therein adaptedto receive a particularly designed key.

Suitable escutcheon plates 11 may be provided between the knobs 8 and 9of the door so as to give the door look a finished appear ance.

Installation and operation of the door lock is as follows: A recesslarge enough to receive the casing 1 is bored into the edge of the door.A hole only large enough to receive the knob spindle 3 is bored at rightangles to the recess so as to intersect therewith. The casing 1 isinserted in the recess until the openings 1?) are in alinement with thehole bored through the door. The latch bolt 2 is pressed inwardly untilin the sition shown in Fig. 7, whereupon the nob spindle 3 is insertedthrough the door until the cut away portion 3a coincides with the latchbolt. The knobs and escutcheon plates are placed on the extended ends ofthe spin dle. The locking rod is inserted within the spindle and the setscrews are positioned.

The spindle is then turned until in the position shown in Fig. 5, andthe lock pin is adjusted so that the locking bolt is limited to thedesired movement.

The latch is normally in the extended position shown in Fig. 1. A turnon the knob in either direction from this normal position draws thelatch bolt 2 within the casing l, and upon releasing either knob, thelatch bolt tends to return to its normal position.

When desiring to lock the bolt in position, the locking rod 10 is turnedso thatthe web 10a shifts from the position shown in Fig. 5 to theposition shown in Fig. 6, whereby thelatch bolt cannot shift withoutengaging the web a.

Thoughwe have shown and described a I particular construction,combination and arrangement of parts and portions, we do not wish to'belimited to this particular construction, combination and arrangement,but desire to include in the scope of our invention the construction,combination and arrangement substantially as set forth in the appendedclaims.

Having thus described our invention, what we claim as new and desire tosecure by Letters Patent is:

1. Ina door look, a cylindrical bolt casing fitted into the edge of adoor, a latch bolt slidably mounted therein, a hollow cylindricalspindle intersecting said bolt casing in said door, a crank operated bysaid hollow spindle engageable with said latch bolt .at its inner end,an eccentric locking bar rotatable in said spindle and extending throughsaid latch bolt, and a hook means carried by said latch bolt andarranged to coact with said locking bar.

2. In a door lock arranged to fit within an annular cylindrical recessformed at the edge of a door, and a similar intersecting opening passingthrough said door, a cylindrical bolt casing arranged to fit in saidrecess, a latch bolt mounted within said bolt casing, a hollow spindleextending through said opening and transversely through said casing,said latch bolt comprising a head portion arranged to protrude from saidcasing, and an integral closed loop portion extending inwardly therefromaround said spindle, a crank portion formed by said spindle engageablewith said loop portion for forcing said latch bolt into said casing, anda locking bar extending through said spindle and through said loopportion, said spindle provided with an aperture therein, at said crankportion, an eccentric portion disposed intermediate the ends of saidlocking bar and exposed by said aperture, and a hook portion carried bysaid latch bolt and protruding into said loop portion, said hook portionarranged to be engaged by said eccentric portion .and be held therebyagainst the action of said spindle.

3. In a door lock arranged to fit within an annular cylindrical recessformed in the middle of the edge of a door and a similar intersectingopening passing through said door, a cylindrical bolt casing secured 1nsaid recess, a latch bolt mounted in said recess consisting of a head,and a pair of side members extenda ing backwardly therefrom and forminga loop at its opposite end, a spring guide mounted centrally in saidhead, a spring mounted around said guide and abutting said head, ahollow cylindrical spindle extending through said opening andtransversely through said casing, said spindle cut away at its middleportion adjacent the looped end of said lat-ch bolt and leaving aportion on one side thereof forming a crank of said spindle, said sideportions engageable with said looped portion for forcing said latch boltinto said casing, a cylindrical lock means revolubly mounted in saidspindle cut away similarly to said spindle at its middle portion andprovided with a lug portion at said cut away portion, said lug portionadapted to engage a notch in the looped portion of said latch bolt andlocking said latch bolt with said lug member for turning in a certainposition in said spindle. p

4. In a door lock arranged to fit within an annular cylindrical recessformed in the middle of the edge of a door and a similar intersectingopeningpassing through said door, a cylindrical bolt casing secured insaid recess, a latch bolt mounted in said recess consisting of a head,and a. pair of side members extending backwardlyvtherefrom and forming aloop at itsopposite end, a spring guide mounted centrally in said head,a spring mounted around said guide and abutting said head, a hollowcylindrical spindle extending through said opening and transverselythrough said casing, said spindle cut away at its middle portionadjacentthe looped end of said latch bolt and leaving a portion on oneside thereof forming a crank of said spindle, said side portionsengages-able with said looped portion for forcing said latch bolt intosaid casing, a cylindrical lock means revolubly mounted in said spindlecut away similarly to said spindle at its middle portion and providedwith a lug port-ion at said cut away portion, said lug portion adaptedto engage a notch in the looped portion of said latch bolt and lockingsaid latch bolt with said lug member for turning in a certain positionin said spindle, and knobs secured on the outer ends of said spindle anda knob secured on the end of said lug means positioned centrally in oneof said knobs.

5. In a door lock, a latch bolt including a head portion, a loop portionextending therefrom and closed at its extended end, a hook at theextended end of said loop portion projecting towards said head portioninto the aperture formed by said loop portion, and shifting lugsprojecting into said aperture at opposite sides of said hook, means forslidably supporting said latch bolt, a hollow spindle including a crankportion intermediate its ends, said spindle arranged to extend throughsaid aperture with said crank portion in engageable relation with saidshifting lugs, a locking bar rotatably mounted in said hollow spindle,and an eccentric portfon formed intermediate the ends of said lockingbar and disposed opposite said crank portion, said eccentric portionengageable with said hook.

6. In a door lock, a slidable latch bolt ineluding a head portion, aloop portion extending therefrom and closed at its extremity, a hook atthe extremity of said loop portion disposed soas to project towards saidhead portion into the aperture formed by said loop portion, means forshifting said latch bolt, and a rotatable locking bar projecting throughthe aperture in said latch bolt, said locking bar including an eccentricportion intermediate its ends arranged to rotate from an interlockedrelation with said hook to a disengaged relation therewith.

7. In a-door lock, a slidable latch bolt in cluding a head portion, aloop portion extending therefrom and closed at its extremity, a hook atthe extremity of said loop portion disposed so as to project towardssaid head portion into the aperture formed by said loop portion, meansfor shifting said latch bolt, a rotatable locking bar projecting throughthe aperture in said latch bolt, said locking bar including an eccentricportion in termediate its ends arranged to rotate from an interlockedrelation with said hook to a disengaged relation therewith, means at oneextremity of said locking bar arranged to coact with a key, and handlemeans at the other extremity of said locking bar.

8. In a door lock, a latch bolt including a head portion, a loop portionextending there from and closed at its extended end, a hook at theextended end of said loop portion projecting towards said head portioninto the aperture formed by said loop portion, and shifting lugsprojecting into said aperture at opposite sides of said hook, means forslidably supporting said latch bolt, a hollow spindle including a crankportion intermediate its ends, said spindle arranged to extend throughsaid aperture with said crank portion in engageable relation with saidshifting lugs, a locking bar rotatably mounted in said hollow spindle,an eccentric portion formed intermediate the ends of said vlocking barand disposed opposite said crank portion, said eccentric portionengageable with said hook, means at one extremity of said locking bararranged to coact with a key, 1

ing bar extending throughsaid aperture, said locking bar including aturning handle at one extremity, a key operable means at its otherextremity, and a locking means intermediate its ends, said locking meansshifted from an interlocking relation to a disengaged relation with saidhook upon rotation of said locking bar.

10. In a door lock, a cylindrical casing, a latch bolt slidably mountedtherein, said latch bolt provided with an aperture intermediate itsends, a hook carried by the inner end of said latch bolt and disposed soas to extend towards the outer end of said latch bolt and into saidaperture, a spindle extending through said aperture, said spindleincluding a crank portion intermediate its ends, knobs at theextremities of said spindle, a locking bar rotatably mounted in said.spindle and extending therewith into both of said knobs, said lockingbar including a turning handle at one extremity, a key operable means atthe other extremity, and a locking means intermediate its ends, saidlocking means disposed opposite the crank portion of said spindle andwithin the aperture of said latch bolt, said locking means beingshiftable from an interlocked relation to a disengaged relation withsaid hook upon rotation of said locking bar.

In testimony whereof, we have hereunto set our hands at San Diego,California this 31st day of May, 1930.

JAMES HILLGREN. CARL HILLGREN.

